Barcelona Museum of Contemporary Art (MACBA)

This modern white cement-and-glass building designed by Richard Meier houses art by Spanish, Catalan, and international artists, particularly from South America and Eastern Europe. Check out abstracts from the 1950s, European pop and avant-garde works from the ’70s, as well as current pieces. Outside, watch local skaters perform gravity-defying tricks, and check out the restored Keith Haring street art mural on a nearby wall, dedicated to the fight against AIDS.